PBDB Collection

Baissa (PIN collection 1989, layer 31) (Cretaceous of Russian Federation)

Where: Buryatia, Russian Federation (53.3° N, 112.1° E)

• Paleocoordinates: 50.9° N, 119.4° E (Wright 2013)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Zaza Formation, Aptian (125.0 - 113.0 Ma)

• C. longipoda, E. trisetalis and Lycoptera all occur in the Zaza Formation indicating that this formation could be correlated with the upper Yixian Formation and the lower Jiufotang Formation in western Liaoning, which have a duration of 122.5-120 Ma. So it is possible to assign the Zaza Formation to an Aptian age. Also correlated with Barremian-Aptian based on plants and pollen.

• group of beds-level stratigraphic resolution

Environment/lithology: lacustrine - large; lithified, carbonaceous siltstone and lithified marl

• "The water body is reconstructed as an intermontane lake with the depth of 20 - 30 meters (LYAMINA 1980) situated within a granite massif. The presence of thick layers of the bituminous shales shows that the lake was meromictic, with the oxygen deficiency and high hydrogen sulphur level in the hypolimnion. However, the oxygenated epilimnion should be thick, with a lower boundary well beneath the limit of episodic wave action because no suffocation events are documented. The abundance of caddisflies, dobsonfly larvae and other groups intolerant to oxygen deficiency shows that in more shallow areas the water was clear and well-oxygenated even near the bottom. The lake ecosystem was highly productive as indicated by its complex trophic structure (Fig. 2) with several levels of predators up to the large sturgeon-like fish Stychopterus as well as by the extremely high abundance of planetonivorous phantom midges (SINICHENKOVA & ZHERIKHIN 1996)." ZHERIKHIN et al., 1999

Size class: macrofossils

Preservation: mold/impression

Primary reference: V. N. Makarkin. 1997. Fossil Neuroptera of the Lower Cretaceous of Baisa, east Siberia. Part 3. Chrysopidae (Insecta). Spixiana 20:107-118 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 122552: authorized by Matthew Clapham, entered by Matthew Clapham on 03.01.2012, edited by Jered Karr, Arram Noshirvan and Lindy Edwards

Creative Commons license: CC0 (CC0)

Taxonomic list

Show authors, comments, and common names

Insecta
Orthoptera - Prophalangopsidae	Utanaboilus bellus n. sp.⁵ Utanaboilus bellus n. sp.⁵ Gorochov 1996 hump-winged cricket PIN 1989/2560
Mantodea -	Cretophotina tristriata⁶ Cretophotina tristriata⁶ Gratshev and Zherikhin 1993 mantis PIN 1989/2487, ?2488
Dicondylia - Baissomantidae	Baissomantis picta⁶, Baissomantis maculata⁶ Baissomantis picta⁶ Gratshev and Zherikhin 1993 winged insect PIN 1989/1645, 8582, 8584 Baissomantis maculata⁶ Gratshev and Zherikhin 1993 winged insect PIN 1989/2489
Blattodea - Ectobiidae	Piniblattella minuta¹⁴, "Mesoblattina vitimica n. sp." = Piniblattella vitimica¹³ Piniblattella minuta¹⁴ Vršanský 1997 cockroach PIN 1989/2450 "Mesoblattina vitimica n. sp." = Piniblattella vitimica¹³ Vishnyakova 1964 cockroach PIN 1989/1639(1646),1613-1615,1618,1619,1621,1624,1627,1628,1630,1631,1636,1637,1637B,1648,1649,1658,1662,1668,1674,1686,1841,2444
Dicondylia - Susumaniidae	"Phasmomimoides latus n. sp." = Eosusumania lata⁸, "Phasmomimoides maculatus n. sp." = Cretophasmomima maculatus⁸, Paraphasmomimella longa n. gen. n. sp.⁸, Phasmomimoides reticulatus n. sp.⁸ "Phasmomimoides latus n. sp." = Eosusumania lata⁸ Kuzmina 1985 winged insect PIN 1989/2565 "Phasmomimoides maculatus n. sp." = Cretophasmomima maculatus⁸ Kuzmina 1985 winged insect PIN 1989/2569 Paraphasmomimella longa n. gen. n. sp.⁸ Kuzmina 1985 winged insect PIN 1989/2582 Phasmomimoides reticulatus n. sp.⁸ Kuzmina 1985 winged insect PIN 1989/2570
Hemiptera - Mimarachnidae	Saltissus eskovi n. gen. n. sp.¹² Saltissus eskovi n. gen. n. sp.¹² Shcherbakov 2007 planthopper PIN 1989/3590
Hemiptera - Hoploridiidae	Hoploridium dollingi n. gen. n. sp.¹⁰ Hoploridium dollingi n. gen. n. sp.¹⁰ Popov and Shcherbakov 1991 true bug PIN 1989/3555
Hemiptera - Palaeoaphididae	Ellinaphis sensoriata⁷, Annulaphis rasnitsyni¹¹ Ellinaphis sensoriata⁷ Shaposhnikov 1979 aphid PIN 1989/3340, 3343, 3592 Annulaphis rasnitsyni¹¹ Shaposhnikov 1979 aphid PIN 1989/3441
Diptera - Mycetophilidae	Drepanorzeckia plana n. gen. n. sp.⁴, Zazicia innuba³ Drepanorzeckia plana n. gen. n. sp.⁴ Blagoderov 1997 fungus gnat PIN 1989/3283 Zazicia innuba³ Blagoderov 1995 fungus gnat PIN 1989/3271
Diptera - Mesosciophilidae	Mesosciophilopsis minor n. sp.² Mesosciophilopsis minor n. sp.² Blagoderov 1994 fly PIN 1989/3149
Neuroptera - Chrysopidae	Mesypochrysa minima n. sp. Mesypochrysa minima n. sp. Makarkin 1997 green lacewing PIN 1989/7
Neuroptera - Psychopsidae	Epipsychopsis fusca n. sp.⁹ Epipsychopsis fusca n. sp.⁹ Makarkin 2010 silky lacewing PIN 1989/55
Coleoptera - Buprestidae	Metabuprestium latipenne n. sp.¹ Metabuprestium latipenne n. sp.¹ Alexeev 1996 jewel beetle PIN 1989/2929

¹Alexeev 1996; ²Blagoderov 1994; ³Blagoderov 1995; ⁴Blagoderov 1997; ⁵Gorochov 1996; ⁶Gratshev and Zherikhin 1993; ⁷Kania and Wegierek 2008; ⁸Kuzmina 1985; ⁹Makarkin 2010; ¹⁰Popov and Shcherbakov 1991; ¹¹Shaposhnikov 1979; ¹²Shcherbakov 2007; ¹³Vishnyakova 1964; ¹⁴Vršanský 1997